/*
 * This program is free software: you can redistribute it and/or modify it under
 * the terms of the GNU General Public License as published by the Free Software
 * Foundation, either version 3 of the License, or (at your option) any later
 * version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program. If not, see <http://www.gnu.org/licenses/>.
 */
package net.sf.l2j.gameserver.model.actor.instance;

import java.util.logging.Logger;

import net.sf.l2j.Config;
import net.sf.l2j.gameserver.ThreadPoolManager;
import net.sf.l2j.gameserver.ai.CtrlIntention;
import net.sf.l2j.gameserver.ai.L2AttackableAI;
import net.sf.l2j.gameserver.model.L2Attackable;
import net.sf.l2j.gameserver.model.L2CharPosition;
import net.sf.l2j.gameserver.model.L2Character;
import net.sf.l2j.gameserver.model.L2World;
import net.sf.l2j.gameserver.model.L2WorldRegion;
import net.sf.l2j.gameserver.model.actor.knownlist.GuardNoHTMLKnownList;
import net.sf.l2j.gameserver.network.serverpackets.ActionFailed;
import net.sf.l2j.gameserver.network.serverpackets.MyTargetSelected;
import net.sf.l2j.gameserver.network.serverpackets.ValidateLocation;
import net.sf.l2j.gameserver.templates.L2NpcTemplate;
import net.sf.l2j.util.Rnd;

/**
 * This class manages all Guards in the world. It inherits all methods from
 * L2Attackable and adds some more such as tracking PK and aggressive
 * L2MonsterInstance.<BR>
 * <BR>
 * 
 * @version $Revision: 1.11.2.1.2.7 $ $Date: 2005/04/06 16:13:40 $
 */
public final class L2GuardNoHTMLInstance extends L2Attackable {
	private static Logger _log = Logger.getLogger(L2GuardNoHTMLInstance.class
			.getName());
	private int _homeX;
	private int _homeY;
	private int _homeZ;
	private static final int RETURN_INTERVAL = 60000;

	public class ReturnTask implements Runnable {
		public void run() {
			if (getAI().getIntention() == CtrlIntention.AI_INTENTION_IDLE)
				returnHome();
		}
	}

	/**
	 * Constructor of L2GuardInstance (use L2Character and L2NpcInstance
	 * constructor).<BR>
	 * <BR>
	 * <B><U> Actions</U> :</B><BR>
	 * <BR>
	 * <li>Call the L2Character constructor to set the _template of the
	 * L2GuardInstance (copy skills from template to object and link
	 * _calculators to NPC_STD_CALCULATOR)</li> <li>Set the name of the
	 * L2GuardInstance</li> <li>Create a RandomAnimation Task that will be
	 * launched after the calculated delay if the server allow it</li> <BR>
	 * <BR>
	 * 
	 * @param objectId
	 *            Identifier of the object to initialized
	 * @param L2NpcTemplate
	 *            Template to apply to the NPC
	 */
	public L2GuardNoHTMLInstance(int objectId, L2NpcTemplate template) {
		super(objectId, template);
		getKnownList(); // init knownlist
		ThreadPoolManager.getInstance().scheduleAiAtFixedRate(new ReturnTask(),
				RETURN_INTERVAL, RETURN_INTERVAL + Rnd.nextInt(60000));
	}

	@Override
	public final GuardNoHTMLKnownList getKnownList() {
		if (super.getKnownList() == null
				|| !(super.getKnownList() instanceof GuardNoHTMLKnownList))
			setKnownList(new GuardNoHTMLKnownList(this));
		return (GuardNoHTMLKnownList) super.getKnownList();
	}

	/**
	 * Return true if hte attacker is a L2MonsterInstance.<BR>
	 * <BR>
	 */
	@Override
	public boolean isAutoAttackable(L2Character attacker) {
		return attacker instanceof L2MonsterInstance;
	}

	/**
	 * Set home location of the L2GuardInstance.<BR>
	 * <BR>
	 * <B><U> Concept</U> :</B><BR>
	 * <BR>
	 * Guard will always try to return to this location after it has killed all
	 * PK's in range <BR>
	 * <BR>
	 */
	public void getHomeLocation() {
		_homeX = getX();
		_homeY = getY();
		_homeZ = getZ();
		if (Config.DEBUG)
			_log.finer(getObjectId() + ": Home location set to" + " X:"
					+ _homeX + " Y:" + _homeY + " Z:" + _homeZ);
	}

	public int getHomeX() {
		return _homeX;
	}

	/**
	 * Notify the L2GuardInstance to return to its home location
	 * (AI_INTENTION_MOVE_TO) and clear its _aggroList.<BR>
	 * <BR>
	 */
	@Override
	public void returnHome() {
		if (!isInsideRadius(_homeX, _homeY, 150, false)) {
			if (Config.DEBUG)
				_log.fine(getObjectId() + ": moving hometo" + " X:" + _homeX
						+ " Y:" + _homeY + " Z:" + _homeZ);
			clearAggroList();
			getAI().setIntention(CtrlIntention.AI_INTENTION_MOVE_TO,
					new L2CharPosition(_homeX, _homeY, _homeZ, 0));
		}
	}

	/**
	 * Set the home location of its L2GuardInstance.<BR>
	 * <BR>
	 */
	@Override
	public void onSpawn() {
		_homeX = getX();
		_homeY = getY();
		_homeZ = getZ();
		if (Config.DEBUG)
			_log.finer(getObjectId() + ": Home location set to" + " X:"
					+ _homeX + " Y:" + _homeY + " Z:" + _homeZ);
		// check the region where this mob is, do not activate the AI if region
		// is inactive.
		L2WorldRegion region = L2World.getInstance().getRegion(getX(), getY());
		if (region != null && !region.isActive())
			((L2AttackableAI) getAI()).stopAITask();
	}

	/**
	 * Manage actions when a player click on the L2GuardInstance.<BR>
	 * <BR>
	 * <B><U> Actions on first click on the L2GuardInstance (Select it)</U>
	 * :</B><BR>
	 * <BR>
	 * <li>Set the L2GuardInstance as target of the L2PcInstance player (if
	 * necessary)</li> <li>Send a Server->Client packet MyTargetSelected to the
	 * L2PcInstance player (display the select window)</li> <li>Set the
	 * L2PcInstance Intention to AI_INTENTION_IDLE</li> <li>Send a
	 * Server->Client packet ValidateLocation to correct the L2GuardInstance
	 * position and heading on the client</li> <BR>
	 * <BR>
	 * <B><U> Actions on second click on the L2GuardInstance (Attack it/Interact
	 * with it)</U> :</B><BR>
	 * <BR>
	 * <li>If L2PcInstance is in the _aggroList of the L2GuardInstance, set the
	 * L2PcInstance Intention to AI_INTENTION_ATTACK</li> <li>If L2PcInstance is
	 * NOT in the _aggroList of the L2GuardInstance, set the L2PcInstance
	 * Intention to AI_INTENTION_INTERACT (after a distance verification) and
	 * show message</li> <BR>
	 * <BR>
	 * <B><U> Example of use </U> :</B><BR>
	 * <BR>
	 * <li>Client packet : Action, AttackRequest</li> <BR>
	 * <BR>
	 * 
	 * @param player
	 *            The L2PcInstance that start an action on the L2GuardInstance
	 */
	@Override
	public void onAction(L2PcInstance player) {
		// Check if the L2PcInstance already target the L2GuardInstance
		if (getObjectId() != player.getTargetId()) {
			// Set the L2PcInstance Intention to AI_INTENTION_IDLE
			player.getAI().setIntention(CtrlIntention.AI_INTENTION_IDLE, null);
			if (Config.DEBUG)
				_log.fine(player.getObjectId() + ": Targetted guard "
						+ getObjectId());
			// Set the target of the L2PcInstance player
			player.setTarget(this);
			// Send a Server->Client packet MyTargetSelected to the L2PcInstance
			// player The color to display in the select window is White
			MyTargetSelected my = new MyTargetSelected(getObjectId(), 0);
			player.sendPacket(my);
			// Send a Server->Client packet ValidateLocation to correct the
			// L2NpcInstance position and heading on the client
			player.sendPacket(new ValidateLocation(this));
		} else // Check if the L2PcInstance is in the _aggroList of the
				// L2GuardInstance
		if (containsTarget(player)) {
			if (Config.DEBUG)
				_log.fine(player.getObjectId() + ": Attacked guard "
						+ getObjectId());
			// Set the L2PcInstance Intention to AI_INTENTION_ATTACK
			player.getAI()
					.setIntention(CtrlIntention.AI_INTENTION_ATTACK, this);
		} else // Calculate the distance between the L2PcInstance and the
				// L2NpcInstance
		if (!isInsideRadius(player, INTERACTION_DISTANCE, false, false))
			// Set the L2PcInstance Intention to AI_INTENTION_INTERACT
			player.getAI().setIntention(CtrlIntention.AI_INTENTION_INTERACT,
					this);
		else {
			// Send a Server->Client ActionFailed to the L2PcInstance in order
			// to avoid that the client wait another packet
			player.sendPacket(ActionFailed.STATIC_PACKET);
			// Set the L2PcInstance Intention to AI_INTENTION_IDLE
			player.getAI().setIntention(CtrlIntention.AI_INTENTION_INTERACT,
					null);
		}
	}
}
